Matt Y: For cooked meats, I usually wait for the meat to cool a bit, loosely wrap it in foil and put it in the freezer. As long as you don't seal the foil air-tight and you vacuum-seal the next day (or 6-8 hours later), you will not get any moisture ice build-up on the meat. I could use the ziplock bags, but they are too expensive. A 20-pack of gallon ziplocks costs as much as 100' roll of foil. If you are concerned about the foil sticking to the food, use a little non-stick spray on the foil before freezing.
For raw, store-bought meats, I'll freeze them in the store packaging. Then, I'll poke a few holes in the store packaging and put the whole package (Styrofoam tray and all) in a vacuum sealer bag and seal it up. I can then see the weight, date and product type on the store label. Takes all the guesswork out of knowing what's in a package in the freezer.